// SLOTS
void JVlibForm::on_System_OpenMidi_button_clicked()
{
disconnect_port();
// close_seq();
System_PlayMidi_button->setChecked(false);
System_PlayMidi_button->setEnabled(false);
System_PauseMidi_button->setEnabled(false);
SysFilePlaying->clear();
System_MIDI_Transpose->setValue(0);
System_MIDI_KeySig->clear();
MIDI_length_display->setText("00:00");
QString fn = QFileDialog::getOpenFileName(this,"Open MIDI File",MIDI_dir,"Midi files (*.mid, *.MID);;Any (*.*)");
if (fn.isEmpty())
return;
strcpy(playfile, fn.toAscii().data());
SysFilePlaying->setText(fn);
init_seq();
if (!queue) queue = snd_seq_alloc_named_queue(seq, "midi_play");
check_snd("create queue", queue);
connect_port();
all_events.clear();
if (!parseFile(playfile)) {
QMessageBox::critical(this, "MIDI Player", QString("Error parsing input file"));
return;
} // parseFile
System_MIDI_progressBar->setRange(0,all_events.back().tick);
System_MIDI_progressBar->setTickInterval(song_length_seconds<240? all_events.back().tick/song_length_seconds*10 : all_events.back().tick/song_length_seconds*30);
System_MIDI_progressBar->setTickPosition(QSlider::TicksAbove);
MIDI_length_display->setText(QString::number(static_cast<int>(song_length_seconds/60)).rightJustified(2,'0') + ":" + QString::number(static_cast<int>(song_length_seconds)%60).rightJustified(2,'0'));
System_PlayMidi_button->setEnabled(true);
System_MIDI_Transpose->setEnabled(true);
} // end on_System_OpenMidi_button_clicked
void MidiQueue::init(snd_seq_t* sequencer, const std::string& name)
{
if (_id == kInvalidId)
{
_sequencer = sequencer;
_id = snd_seq_alloc_named_queue(sequencer, name.c_str());
}
else
{
std::cerr << "Queue is already initialized\n";
}
}
// create a queue and return its id
int my_queue(snd_seq_t *handle)
{
return snd_seq_alloc_named_queue(handle, "Game Drumkit queue");
}
